I'm incredibly conflicted over this since there are several possibilities that all impact on my reaction. For instance, if she's trans but simply doesn't realise it yet or is a non-binary person trying to navigate a binary culture then I'd be very supportive. Most importantly to me, I hope she finds happiness and has a fantastically loving marriage.
Having said that, the person's identity does not change the framing of this and how it was presented. It doesn't mitigate the damage done by presenting something intimate, and often arduous, as some kind of superficial legal manipulation. Whether she's trans or not doesn't change the fact she may have been party to something that feeds into the deceiver trope and makes fundamental identities seem like a silly fiction. If the media have presented it in this way without her consent and knowledge then that's understandable but if she knowingly helped to create this narrative then it's unacceptable.
Unfortunately, I think the average reader of this will not conclude that the lack of civil marriage rights or absurdly inconsistent gatekeeping of trans people is the problem but that trans rights and recognition are the problem.